I replaced the third brake light in the wagon tailgate today. Super Easy!. I had glued the old one in with Butyl Rubber. It took a little work to remove. The old light assembly was cracked in about five places. Looked like someone had over-tightened it a bunch of times.
The solution to a leaking third brake light in a wagon hatch is butyl rubber! It's the same stuff used to seal windshields. It's about $1 a foot - typically supplied in a 15' roll. I cleaned the old stuff off, cleaned the painted surface with a paint prep like SEM or PREP Sol and then applied a thin (1/4 inch) bead of butyl.
Fish the cable through the hole in the hatch and connect it, install the light and then cinch up the nuts FINGER TIGHT sequentially. Put the cover back on and you're done. No leaks and NO cracked light housing. I think too many people try to over-torque the retaining nuts trying to get a good weather tight seal and then break the $150 light.
posted by 75.38.241...
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